There is an obesity problem in America, and is possibly a burden on healthcare. Yet at the same time, the threat of obesity at the individual level is overstated by experts and the diet, fitness, and health industry which oversells the danger of obesity . Unless you are so overweight that you find it hard to move and have to use a scooter or something, the number of years lost to obesity is not that much, maybe 2 or 3. I see plenty of obese fully functioning people well into their 80s. Henry Kissinger is anexample. Another is William Shatner, aged 90. The number of years lost due to obesity is much less than smoking or chronic alcohol consumption. Having to constantly count calories and do tons of exercise for those 2-3 extra years is possibly not worth it. Bigger humans may be the default now owing to increased prosperity.Humans were thinner 100+ years ago due to not enough food.